THE MINERALS OF IDAHO 



195 



plates are associated with bornite and large brown garnets in quartz. 

 Livingston and Laney 2 write that the specular hematite is most 

 abundant in the Lockwood mine. 



BANNOCK COUNTY 



Minute and very thin hexagonal tabular crystals ol hematite 

 occur in NW. x /i sec. 9, T. 6 S., R. 43 E., on Lanes Creek, inassocia- 

 tion with calcite and quartz crystals in vugs in garnet rock. These 

 show only a basal pinacoid and very flat hexagonal pyramid. The 

 angles measured on the pyramid average p = 7° 31'. This would 

 indicate the rhombohedron (1.1.2.12) cal- 

 culated p for which is 7° 28'. The devel- 

 opment of the crystals is shown in the 

 drawing, Figure 34. 



BEAR LAKE COUNTY 



Bedded red oolitic hematite occurs in 



an iron prospect 1 3^2 miles southwest of 



Bloomington in NW. %, SW. M sec. 34, 

 T. 14 S.. R. 43 E. 



BOISE COUNTY 



Large pebbles of granular hematite are 

 found in the Leary and Brogan placers. 



CUSTER COUNTY 



In the copper deposits of the Alder FlG . 34.— hematite, very thin 



Creek district both the red, earthy, tabular crystal from bannock 



1 . P 1 ■ 11 County 

 secondary form 01 hematite and the spe- 



cularite variety are abundant. The former, in deep red ocherous 

 masses, greatly exceeds limonite in amount. Specularite occurs 

 abundantly, usually intergrown with magnetite. Elsewhere in the 

 county earthy hematite is widespread as an oxidation product. 



LEMHI COUNTY 



In the Allie vein, 50 feet up from the Allie crosscut, reddish micace- 

 ous specular hematite occurred with ocherous limonite. Specular 

 hematite is reported by 11. T. Stearns as abundant with quartz and 

 a little copper carbonate in a vein 5 feet wide on Spring Mountain in 

 the Spring Mountain district. 



SHOSHONE COUNTY 



In the Coeur d'Alene district ocherous red hematite is found in a 

 few places as an oxidation product in the weathered portions of ore 



2 Idaho Bur. Minos and Geol., Bull. 1, p. 76, 1920. 



